Well it would help if you told us and idea of what you want the second remote for? And what do you use your first remote with? And is it a float?
Simplest answer is ....get float. There is no difference in operating a valve with float and one without. The float just adds an extra feature IF it is ever needed. But effects nothing else.
Mtnveiwranch gives an excellent reason for wanting float on a side link doing road work. Probably not related to his area but most certainly related to ohio....same principal as he describes but moving snow with a rear blade. Sure the 3PH control the up-down to follow the contour of the area to be plowed.....but it offers no left-right contour-following ability.
Float can also be used on the toplink. How many threads do we see on here about people suggesting putting a piece of chain in place of the toplink to allow the tail of an implement (specifically bushhog) to follow better. Many dont understand this, because MOST newer mowers have this built in. Either a swinging toplink clevis, or a chain from the a-frame to deck...or some other type of pivot. But there are still MANY MANY old cutters out there that are rigid. Ever seen old (lighter duty) cutters with the straps that go to the deck all bent up? .....Yep thats because someone tried to cross a swale or something and the tailwheel had no ability to raise independently.
Another time I like float is when pulling the transport disc. On a second pass, when I want more smooting action and less penetration.....I let the transport wheels float. Basically making the disc lighter....but not allowing the wheels to raise the disc's in the air if the ground is a little rolling.
You may get a float valve and NEVER use the float function. Which is fine....doesnt hurt you one bit in any other function. But for the little cost difference, its there if you ever need it.